Reductive transformation of methyl parathion by the cyanobacterium Anabaena sp. strain PCC7120

Organophosphorus compounds are toxic chemicals that are applied worldwide as household pesticides and for crop protection, and they are stockpiled for chemical warfare. As a result, they are routinely detected in air and water. Methods and routes of biodegradation of these compounds are being sought. We report that under aerobic, photosynthetic conditions, the cyanobacterium Anabaena sp. transformed methyl parathion first to o,o-dimethyl o-p-nitrosophenyl thiophosphate and then to o,o-dimethyl o-p-aminophenyl thiophosphate by reducing the nitro group. The process of methyl parathion transformation occurred in the light, but not in the dark. Methyl parathion was toxic to cyanobacteria in the dark but did not affect their viability in the light. Methyl parathion transformation was not affected by mutations in the genes involved in nitrate reduction in cyanobacteria.

Survivor guilt, submissive behaviour and evolutionary theory: the down-side of winning in social comparison

In prior research submissive behaviour has been studied in relation to social comparison. Evolutionary theory conceptualized submissive behaviour as a fear-based self-protective strategy when in a subordinate position. In this study we hypothesized that survivor guilt, the type of guilt associated with feeling better off than others, is also linked to submissive behaviour. The Interpersonal Guilt Questionnaire, the Submissive Behaviour Inventory, the Eysenck Personality Questionnaire-Revised and the Automatic Thoughts Questionnaire were administered to a sample of 199 college students. Submissive behaviour was found to be significantly correlated with survivor guilt. Introversion, used as an indirect measure of the fear of being put down, was also correlated with submissive behaviour. A principal components analysis found two components: the first was composed of high loadings of submissiveness, survivor guilt and omnipotent responsibility guilt; the second was composed of high loadings of submissiveness and introversion. This supports the hypothesis that there may be two motivational states related to submissive behaviour, the fear of harm to the self, as described in prior studies, and the fear of harm to another or guilt-based submissive behaviour. We propose that survivor guilt has been selected by evolution as a psychological mechanism supporting group living, and that it may be considered from the perspective of inclusive fitness, reciprocal altruism, and multilevel selection theory.

Interpersonal guilt: the development of a new measure

We describe the development of a new measure to assess guilt related to concern about harming others. The two versions of the Interpersonal Guilt Questionnaire, a 45-item and 67-item version, include theoretically-based and clinically relevant categories of guilt: survivor guilt, separation/disloyalty guilt, omnipotent responsibility guilt, and self-hate guilt. Preliminary reliability and validity studies for both versions are presented, based on clinical and nonclinical samples of subjects. Subscales on both versions show good internal consistency; however, the second version, which expanded on the first, is more psychometrically sound overall. Both versions demonstrated predicted correlations with previously published measures of guilt and related affects, such as shame and depression, and with attributional style. Differences between clinical and nonclinical samples are reported and the relevance of survivor guilt and shame to psychopathology is noted.

Guilt, shame, and depression in clients in recovery from addiction

Men and women in recovery from addiction were compared on levels of depression, guilt, and shame. The measurement of guilt included subscales of Survivor Guilt, Separation Guilt, Omnipotent Responsibility Guilt, Trait Guilt, State Guilt, and Adaptive Guilt. The sample included 75 men and 33 women in treatment in a residential treatment community. It was found that women were significantly higher than men in depression. The recovering subjects were compared to nonaddicted subjects and established norms, and it was found that the recovering people were higher on depression, shame, and the subscales of maladaptive guilt. Both men and women in recovery were significantly lower than norms in adaptive guilt.

The drug-of-choice phenomenon psychological differences among drug users who preferred different drugs

The Eysenck Personality Questionnaire, the Sensation Seeking Scale, and the Brief Symptom Inventory were administered to 125 recovering drug users with three or more months abstinent from drugs. Subjects were divided according to drug preference: opiates, stimulants, marijuana, alcohol, and a polydrug preference. Opiate users were significantly higher in Susceptibility to Boredom. Alcohol misusers compared to a combined stimulant, opiate, and polydrug group were significantly lower in Extroversion and Susceptibility to Boredom. Subjects raised in drug/alcohol-using families scored significantly higher on Neuroticism and on the Positive Symptom Total of the BSI, and had a higher rate of suicidality.

Shame, guilt, and depression in men and women in recovery from addiction

Men and women in recovery from addiction were compared on levels of depression and self-conscious affect including proneness to shame, guilt, externalization, detachment, and pride. The sample consisted of 130 subjects (88 men and 42 women; mean age 33.04), 90 of whom were active participants in a 12-step recovery program, and 40 of whom were in a residential treatment community. Subjects completed The Beck Depression Inventory and The Test of Self-Conscious Affect. Significant differences between the sexes were found for proneness to shame, detachment, and depression. Women were significantly higher on shame and depression; men were significantly higher on detachment. The subjects were compared to subjects who were not chemically dependent. It was found that these recovering drug-addicted subjects scored significantly higher in proneness to shame and externalization and significantly lower on proneness to guilt. Treatment implications of proneness to shame in the drug-addicted population, and particularly in women, are discussed. The use of confrontational drug treatment strategies may be contraindicated.

Individual psychotherapy for addicted clients: an application of control mastery theory

This article presents an overview of Control Mastery Theory, developed by Joseph Weiss, and applies this theory to the treatment of alcohol- and other drug-addicted clients. The article proposes that individual psychotherapy, in conjunction with self-help and other chemical dependency treatment programs, may be a significant component of the treatment of addicted clients. According to Weiss's theory, addicted clients are suffering not only from the direct effects of addictive disease but are also often suffering from unconscious pathogenic beliefs acquired from childhood experiences. Pathogenic beliefs result in shame, guilt, fear, and inhibitions that predate the development of addiction. Addicted clients are highly motivated unconsciously to recover from their addiction and to pursue normal goals. They are hindered by their pathogenic beliefs and by the effects of their addiction. They enter treatment with an unconscious plan to stop using drugs and to disprove their pathogenic beliefs. They test their pathogenic beliefs in relation to the therapist, with the hope of obtaining evidence against these beliefs. As the therapist passes the client's tests, these beliefs are modified and the client is helped to recover.

Systemic sarcoidosis presenting initially with bilateral orbital and upper lid masses

A patient with systemic sarcoidosis presented initially with bilateral orbital and upper lid masses. Computed tomographic scan showed bilateral anterior orbital and upper lid masses, diffuse irregular thickening of the rectus muscles, circumferential cuffing of both globes, and irregular thickening of the distal portion of the right optic nerve sheath. A biopsy specimen of the right upper lid mass showed fibroadipose tissue with multiple noncaseating granulomas. Bilateral pulmonary hilar lymphadenopathy, a positive gallium scan, anergy by skin testing, and the presence of erythema nodosum confirmed the diagnosis of systemic sarcoidosis.